Fix 'An Update Is Required to Use Cellular Data' on iPhone
Source-checked · About 10 minutes
Answer
If iPhone says an update is required to use cellular data, back it up, update iOS and carrier settings, then connect it to a current Mac or PC so Finder or Apple Devices can reinstall the current iOS update. Contact Apple if the Cellular Issue message remains.
Open Settings > General > About and note whether iPhone shows Cellular Issue Detected or an update-required message. Confirm the carrier account and local service are otherwise active.
2
Back up before repair
Create a current iCloud or computer backup. Keep the iPhone charged and do not erase the eSIM or reset network settings as a substitute for the required cellular update.
3
Install ordinary updates first
Connect to reliable Wi-Fi, open Settings > General > Software Update, and install the current iOS update. Return to Settings > General > About and accept a carrier settings update when offered.
4
Prepare a current computer
On a Mac, install current macOS; on Windows, update Apple Devices or iTunes. Connect the iPhone by cable, unlock it, trust the computer, and select it in Finder or Apple Devices.
5
Reinstall the current update
When the computer reports the cellular update problem, choose the offered Download and Update action. Keep the cable connected until the iPhone restarts and the computer finishes.
6
Verify cellular service
After restart, open Settings > Cellular, confirm the intended line is enabled, turn Airplane Mode on and off once, and test a call and cellular data away from Wi-Fi.
7
Arrange service if the alert returns
If the message or missing cellular controls remain after the computer update, contact Apple Support with the iPhone model, iOS version, carrier, and exact alert; the cellular hardware may require service.
Video walkthrough
ⓘ Sources and verification
Checked against official documentation on . Scope: iPhone & iPad.
Reviewed against the linked first-party guidance; interface labels can vary by current app or operating-system version.
